JPS6251090A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To perform a frame recording without an error by discriminating, storing the recording state of all tracks and displaying on a monitor television as necessary. CONSTITUTION:When a video floppy disk cassette 1 is inserted, a magnetic head 5 successively moves 50 tracks from an outermost periphery to an innermost periphery. At this time, a reproducing output picked up by the magnetic head 5 detects its envelope in a recording detecting circuit 21 and discriminates whether it is recorded or not. The result is stored in a memory circuit 22 and on all of the 50 tracks, a table for discriminating whether they are recorded or not is formed. The data is arranged as video signals in an output circuit 23, thereby, the video signals of a list on the 50 tracks can be constituted and displayed on a television receiver by the designation of an operating part 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus using a removable multi-track magnetic disk such as a video floppy disk for an electronic still camera.

Conventional technology Electronic still camera video recording data is not limited to floppy disks as electronic camera media.

In addition to the trend of using it for recording audio, it is also possible to use it for recording television images or video camera images, that is, using it as a medium for recording and reproducing devices.

Hereinafter, an example of the above-mentioned recording/reproducing apparatus will be explained with reference to FIG.

1 is a removable video floppy disk cassette, and 2 is a magnetic disk for recording signals. A disk motor 3 engages with the magnetic disk 2 of the video floppy disk 1 and rotates the magnetic disk 2 at a constant rotation. 4 is a disk motor circuit that controls the rotation speed of the disk motor 3 and drives it. 6 is a magnetic head and that is 7
A head moving mechanism 6 whose driving source is a stepping motor of
It is mounted on the magnetic disk 2 and moves on the radius of the magnetic disk 2. 8 is a stepping motor circuit that controls and drives the stepping motor 7. Reference numeral 14 denotes an operation section of the magnetic recording apparatus, which is provided with a track number designation switch, a recording switch, a recording/reproduction changeover switch, etc. as required, and also has several display functions such as track number display. A control circuit 16 controls the operation of the recording and reproducing apparatus according to instructions from the operation unit 14. 0 12 is a video input terminal, 13 is a video output terminal, 1o is a recording circuit, 11 is a reproduction circuit, and 9 The recording/reproducing changeover switch selects whether to record or reproduce using the head 6.

The operation of the conventional mountain recording and reproducing apparatus configured as described above will be explained below.

When recording signals on the Yamaki disc 2, the recording/reproducing switch 9 is connected to the @REC side.The video signal input from the video input terminal 12 is converted into YCC separated 1-difference line format, double-difference formatted, Processing such as FM modulation and recording amplification is performed by the recording circuit 10, and a recording current is sent to the magnetic head 6. On the other hand, during reproduction, the recording/reproducing switch 9 is connected to the PB'' side, and the reproduction signal picked up by the Yamaki head 6 is connected to the PB'' side. In the reproduction circuit 11, FM demodulation, de-emphasis/color signal reproduction, Y
It performs processing such as C mixing, and outputs it from the video output terminal 13 as a video signal. The magnetic disk 2 rotates at 3,600 revolutions per minute and records one track and one field of television images. Sixty tracks are formed on the magnetic disk 2 at a pitch of 10oAm. That is, when an instruction to "move one track" is given from the operation unit 14, the magnetic head 6 moves by 100 μm.
The stepping motor 7 operates to move the head, and the head moving mechanism 6 operates. As described above, a magnetic recording and reproducing apparatus is configured which records and reproduces video signals while selecting tracks.

Problems to be Solved by the Invention However, with the above configuration, it is not known which tracks among the 50 tracks are unrecorded and which are recordable.
This is inconvenient when recording several images in a coherent manner.

In view of the above-mentioned problems, the present invention makes it possible to simultaneously determine the recording status of all tracks, store it, and display it on, for example, a monitor television when necessary, so that it is possible to see at a glance whether each track is recorded or unrecorded. The present invention provides a magnetic recording and reproducing device that can record a plurality of images in a coherent manner.

Means for Solving the Problems In order to solve the above problems, the magnetic recording and reproducing apparatus of the present invention includes a recorded detection means for determining whether each track is recorded or unrecorded, a memory means for storing the detected information, and a memory means for outputting the detected information. It is equipped with a means for displaying the information.

Effects of the present invention With the above-described configuration, unrecorded tracks can be known all at once, and editing work for determining which video should be recorded on which track is facilitated.

Embodiments Hereinafter, magnetic recording and reproducing apparatuses according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.

Components that are the same as those in the conventional example shown in FIG. 2 are designated by the same numbers and redundant explanations will be omitted. 21 is a recording detection circuit, 22 is a memory circuit, 23 is an output circuit, and 24 is a display changeover switch.

Next, the operation of this embodiment will be explained below.

When the video floppy disk cassette 1 is inserted, the magnetic head 6 sequentially moves around the rack from the outermost circumference to the innermost circumference (50). At this time, the reproduction output picked up by the magnetic head 6 is envelope-detected by the recording detection circuit 21 to determine whether it has been recorded or not, and the result is sent to the memory circuit 21.
2, and all 6o tracks have been recorded.
An unrecorded table will be created. Output circuit 2
By arranging them as video signals in step 3, a list of video signals for the 5° track can be constructed.In response to an instruction from the operation unit 14, a control signal for the display changeover switch 24 is output from the control circuit 15, and the switch 24 is connected to the 6 data side, and a list indicating recording/unrecording of the aforementioned 50 tracks is displayed on a television receiver (not shown) connected to the video output terminal 13.

Effects of the Invention As described above, according to the present invention, (1) Unrecorded tracks can be removed, making recording and editing operations easier.

(2) Two tracks are required to perform frame recording, and two consecutive unrecorded tracks can be easily found, making error-free frame recording possible.

This provides an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional example. 21...Record detection circuit, 22...Memory circuit, 23...Output circuit, 24...
Display changeover switch.

Claims (1)

[Claims] A multi-track magnetic recording/reproducing device capable of recording a plurality of images by moving a magnetic head on the radius of a disk-shaped magnetic disk, and detecting whether each of the tracks has been recorded. 1. A magnetic recording and reproducing device comprising a recorded detection means, a memory means for storing the detection result, and an output display means for outputting and displaying all or part of the memory contents.